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    Warning Signs

    Know the signsand act on concern.

    Symptoms can be subtle, different from one person to another, or not match the image people expect. Concern is enough reason to seek urgent help.

    When an emergency is possible, contact local emergency services now.

    Heart attack warning signs can include

    • Chest pain or discomfort that lasts for more than a few minutes or goes away and comes back
    • Shortness of breath
    • Pain or discomfort in the jaw, neck, back, arm, or shoulder
    • Weakness, lightheadedness, faintness, or a cold sweat
    • Nausea, vomiting, or unusual tiredness

    Stroke warning signs can include

    • Sudden numbness or weakness in the face, arm, or leg, especially on one side
    • Sudden confusion or trouble speaking or understanding speech
    • Sudden trouble seeing, walking, or keeping balance
    • A sudden severe headache with no known cause

    Why time matters

    Emergency treatment can reduce damage when it begins quickly. Do not use an online page to rule out an emergency, and do not wait for every possible symptom to appear.

    Review Emergency Help

    Sources and limitations

    Start with evidence. Keep the claims precise.

    CDC: About heart attack symptoms ↗CDC: Signs and symptoms of stroke ↗

    Legacy Heart Health Initiative is a cardiovascular health, prevention, and early-action program in development. This page is not medical advice and does not replace a qualified clinician. If you may be experiencing an emergency, contact local emergency services rather than using this site.